Conciseness

The body is dense and operational — tables for mode detection, quick reference, edge cases, and common mistakes; no explaining of concepts Claude already knows (it never defines Design Thinking, Shadcn, or FSD). It falls just short of the score-5 'every token earns its place' anchor due to redundancy: the anti-mechanical warning appears in both the role block and Common Mistakes, Phase 7's component verification repeats Phase 3's glob instructions, and the preserved-sections list duplicates template content that lives in references/ui-spec-template.md. It is clearly above the score-3 anchor, which expects noticeably unnecessary explanation.

Actionability

Guidance is concrete and executable throughout: exact glob patterns ('frontend/src/features/{domain}/components/**/*.tsx'), the exact questions to ask per phase, the gate condition ('do not advance until questions 1 and 2 are answered'), a literal CDN script tag for HTML previews, the output file path ('docs/ui-specs/UI-SPEC-{feature-name}.md'), and named navigation phrases ('volvamos a las propuestas'). For an instruction-only skill this matches the score-5 anchor — specific guidance covering the common cases — rather than the score-4 anchor with minor gaps.

Workflow Clarity

The 7-phase sequence is explicit with a Quick Reference table of tools and gates per phase, an upfront mode-detection table that routes to different phase subsets, a hard validation gate in Phase 1 ('Do NOT proceed to Phase 2 without answers to at least questions 1 and 2'), Phase 7's verify-before-write step ('Verify real component names against codebase' before writing the UI-SPEC), error-recovery navigation ('volvamos a [phase]' re-enters with accumulated context), and an Edge Cases + Common Mistakes section for failure modes. This matches the score-5 anchor (clear sequence, explicit validation steps, feedback loops); the skill's only write operation is the spec file, so no destructive-operation cap applies.

Progressive Disclosure

Structure is good: all five reference files are one level deep, clearly signaled with explicit load instructions ('Load references/proposal-format.md and references/ascii-mockup-guide.md with Read') and listed up front in the role block; all referenced paths exist in references/. It falls short of the score-5 'clear overview' anchor because the body is a full 300-line operating manual rather than an overview — the detailed HTML-preview procedure (CDN setup, token replication, xdg-open) and the full Phase 1/2 question scripts are content that could live in reference files like the other formats do. It is well above the score-3 anchor, where references would be unclearly signaled or mis-placed content would be inline.

Specificity

The description lists multiple concrete actions covering the full workflow: 'defines user personas, frames problems, audits existing components... researches SaaS UI patterns, proposes multiple distinct layout paradigms with ASCII wireframes and HTML mockups, iterates through dialogue, and delivers a complete UI-SPEC.md with component trees, data flow, responsive behavior, and interaction patterns'. This matches the score-5 anchor (multiple specific concrete actions, comprehensive coverage) and is clearly above the score-4 anchor, which expects minor gaps in coverage.

Completeness

Both parts are explicit: 'what' is answered by 'Executes a 7-phase creative Design Thinking workflow: [detailed phase actions]' and 'when' by the opening 'Use when designing new screens, redesigning existing UI, creating visual concepts, or improving interfaces in Nicolify' plus a concrete trigger-phrase list. This matches the score-5 anchor (clearly and explicitly answers both what AND when with concrete trigger phrases) and exceeds the score-4 anchor where 'when' is present but less specific.

Trigger Term Quality

The explicit 'Triggers:' list provides comprehensive natural terms with synonyms a Spanish-speaking user would actually say: 'diseña', 'rediseña' (design/redesign variants), 'nueva pantalla', 'concepto visual', 'propuesta de diseño', 'UX', 'layout', 'prototipo', 'mejora la interfaz', 'wireframe', 'mockup', 'esquema de color', 'componentes de pantalla' — covering mockup/wireframe/prototipo as synonyms. This fits the score-5 anchor (comprehensive coverage including synonyms); it is above score 4, which would have notable natural terms missing.

Distinctiveness Conflict Risk

The description is clearly scoped to 'Nicolify' with a distinctive '7-phase creative Design Thinking workflow' and Spanish triggers, separating it from generic or mechanical UX skills. However, broad trigger terms like 'UX', 'layout', and 'wireframe'/'mockup' could fire in general UI-design contexts where a sibling skill (e.g., the mechanical 'nicolify-ux-designer') or another design skill is more appropriate — minor overlap risk with closely related skills, matching the score-4 anchor rather than the minimal-conflict score-5 anchor.